Reports presented at an annual meeting of the Transportation Research Board.

Ordway Colorado experimental base project / James F. Shook and Bernard F. Kallas -- Use of deflection measurements for determining pavement material properties / B. Frank McCollough and Arthur Taute. -- Marterial layer coefficiants for unbound granular materials from resilient modulus / Gonzalo Rada and Matthew W. Witczak -- Moduli of pavement systems from special analysis of surface waves / J.S. Heisey, K.H. Stokoe II, and A.H. Meyer -- Comparative study of selected nondestructive testing devices / Mario S. Hoffman and Marshall R. Thompson -- Backcalculating nonlinear resilient moduli from deflection data / Mario F. Hoffman and Marshall R. Thompson -- Effective moduli and stress dependence of pavement materials as measured in some heavy-vehicle simulator tests / J.H. Maree ... [et al.] -- Sulphlex pavement performance evaluations from laboratory tests / James A. Sherwood and William J. Kenis.